1 // SPDX-License-Identifier: GPL-2.0
2 /* Marvell MCS driver
3 *
4 * Copyright (C) 2022 Marvell.
5 */
6
7 #include <linux/bitfield.h>
8 #include <linux/delay.h>
9 #include <linux/device.h>
10 #include <linux/module.h>
11 #include <linux/pci.h>
12
13 #include "mcs.h"
14 #include "mcs_reg.h"
15
16 #define DRV_NAME "Marvell MCS Driver"
17
18 #define PCI_CFG_REG_BAR_NUM 0
19
20 static const struct pci_device_id mcs_id_table[] = {
21 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_CN10K_MCS) },
22 { 0, } /* end of table */
23 };
24
25 static LIST_HEAD(mcs_list);
26
mcs_get_tx_secy_stats(struct mcs * mcs,struct mcs_secy_stats * stats,int id)27 void mcs_get_tx_secy_stats(struct mcs *mcs, struct mcs_secy_stats *stats, int id)
28 {
29 u64 reg;
30
31 reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLBCPKTSX(id);
32 stats->ctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
33
34 reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLMCPKTSX(id);
35 stats->ctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
36
37 reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLOCTETSX(id);
38 stats->ctl_octet_cnt = mcs_reg_read(mcs, reg);
39
40 reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLUCPKTSX(id);
41 stats->ctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
42
43 reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLBCPKTSX(id);
44 stats->unctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
45
46 reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLMCPKTSX(id);
47 stats->unctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
48
49 reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLOCTETSX(id);
50 stats->unctl_octet_cnt = mcs_reg_read(mcs, reg);
51
52 reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLUCPKTSX(id);
53 stats->unctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
54
55 reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSECYENCRYPTEDX(id);
56 stats->octet_encrypted_cnt = mcs_reg_read(mcs, reg);
57
58 reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSECYPROTECTEDX(id);
59 stats->octet_protected_cnt = mcs_reg_read(mcs, reg);
60
61 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYNOACTIVESAX(id);
62 stats->pkt_noactivesa_cnt = mcs_reg_read(mcs, reg);
63
64 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYTOOLONGX(id);
65 stats->pkt_toolong_cnt = mcs_reg_read(mcs, reg);
66
67 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYUNTAGGEDX(id);
68 stats->pkt_untagged_cnt = mcs_reg_read(mcs, reg);
69 }
70
mcs_get_rx_secy_stats(struct mcs * mcs,struct mcs_secy_stats * stats,int id)71 void mcs_get_rx_secy_stats(struct mcs *mcs, struct mcs_secy_stats *stats, int id)
72 {
73 u64 reg;
74
75 reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLBCPKTSX(id);
76 stats->ctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
77
78 reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLMCPKTSX(id);
79 stats->ctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
80
81 reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLOCTETSX(id);
82 stats->ctl_octet_cnt = mcs_reg_read(mcs, reg);
83
84 reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLUCPKTSX(id);
85 stats->ctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
86
87 reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLBCPKTSX(id);
88 stats->unctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
89
90 reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLMCPKTSX(id);
91 stats->unctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
92
93 reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLOCTETSX(id);
94 stats->unctl_octet_cnt = mcs_reg_read(mcs, reg);
95
96 reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLUCPKTSX(id);
97 stats->unctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
98
99 reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSECYDECRYPTEDX(id);
100 stats->octet_decrypted_cnt = mcs_reg_read(mcs, reg);
101
102 reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSECYVALIDATEX(id);
103 stats->octet_validated_cnt = mcs_reg_read(mcs, reg);
104
105 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSCTRLPORTDISABLEDX(id);
106 stats->pkt_port_disabled_cnt = mcs_reg_read(mcs, reg);
107
108 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYBADTAGX(id);
109 stats->pkt_badtag_cnt = mcs_reg_read(mcs, reg);
110
111 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOSAX(id);
112 stats->pkt_nosa_cnt = mcs_reg_read(mcs, reg);
113
114 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOSAERRORX(id);
115 stats->pkt_nosaerror_cnt = mcs_reg_read(mcs, reg);
116
117 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYTAGGEDCTLX(id);
118 stats->pkt_tagged_ctl_cnt = mcs_reg_read(mcs, reg);
119
120 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYUNTAGGEDORNOTAGX(id);
121 stats->pkt_untaged_cnt = mcs_reg_read(mcs, reg);
122
123 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYCTLX(id);
124 stats->pkt_ctl_cnt = mcs_reg_read(mcs, reg);
125
126 if (mcs->hw->mcs_blks > 1) {
127 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOTAGX(id);
128 stats->pkt_notag_cnt = mcs_reg_read(mcs, reg);
129 }
130 }
131
mcs_get_flowid_stats(struct mcs * mcs,struct mcs_flowid_stats * stats,int id,int dir)132 void mcs_get_flowid_stats(struct mcs *mcs, struct mcs_flowid_stats *stats,
133 int id, int dir)
134 {
135 u64 reg;
136
137 if (dir == MCS_RX)
138 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSFLOWIDTCAMHITX(id);
139 else
140 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSFLOWIDTCAMHITX(id);
141
142 stats->tcam_hit_cnt = mcs_reg_read(mcs, reg);
143 }
144
mcs_get_port_stats(struct mcs * mcs,struct mcs_port_stats * stats,int id,int dir)145 void mcs_get_port_stats(struct mcs *mcs, struct mcs_port_stats *stats,
146 int id, int dir)
147 {
148 u64 reg;
149
150 if (dir == MCS_RX) {
151 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSFLOWIDTCAMMISSX(id);
152 stats->tcam_miss_cnt = mcs_reg_read(mcs, reg);
153
154 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSPARSEERRX(id);
155 stats->parser_err_cnt = mcs_reg_read(mcs, reg);
156 if (mcs->hw->mcs_blks > 1) {
157 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSEARLYPREEMPTERRX(id);
158 stats->preempt_err_cnt = mcs_reg_read(mcs, reg);
159 }
160 } else {
161 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSFLOWIDTCAMMISSX(id);
162 stats->tcam_miss_cnt = mcs_reg_read(mcs, reg);
163
164 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSPARSEERRX(id);
165 stats->parser_err_cnt = mcs_reg_read(mcs, reg);
166
167 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECTAGINSERTIONERRX(id);
168 stats->sectag_insert_err_cnt = mcs_reg_read(mcs, reg);
169 }
170 }
171
mcs_get_sa_stats(struct mcs * mcs,struct mcs_sa_stats * stats,int id,int dir)172 void mcs_get_sa_stats(struct mcs *mcs, struct mcs_sa_stats *stats, int id, int dir)
173 {
174 u64 reg;
175
176 if (dir == MCS_RX) {
177 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAINVALIDX(id);
178 stats->pkt_invalid_cnt = mcs_reg_read(mcs, reg);
179
180 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSANOTUSINGSAERRORX(id);
181 stats->pkt_nosaerror_cnt = mcs_reg_read(mcs, reg);
182
183 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSANOTVALIDX(id);
184 stats->pkt_notvalid_cnt = mcs_reg_read(mcs, reg);
185
186 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAOKX(id);
187 stats->pkt_ok_cnt = mcs_reg_read(mcs, reg);
188
189 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAUNUSEDSAX(id);
190 stats->pkt_nosa_cnt = mcs_reg_read(mcs, reg);
191 } else {
192 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSAENCRYPTEDX(id);
193 stats->pkt_encrypt_cnt = mcs_reg_read(mcs, reg);
194
195 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSAPROTECTEDX(id);
196 stats->pkt_protected_cnt = mcs_reg_read(mcs, reg);
197 }
198 }
199
mcs_get_sc_stats(struct mcs * mcs,struct mcs_sc_stats * stats,int id,int dir)200 void mcs_get_sc_stats(struct mcs *mcs, struct mcs_sc_stats *stats,
201 int id, int dir)
202 {
203 u64 reg;
204
205 if (dir == MCS_RX) {
206 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCCAMHITX(id);
207 stats->hit_cnt = mcs_reg_read(mcs, reg);
208
209 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCINVALIDX(id);
210 stats->pkt_invalid_cnt = mcs_reg_read(mcs, reg);
211
212 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCLATEORDELAYEDX(id);
213 stats->pkt_late_cnt = mcs_reg_read(mcs, reg);
214
215 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCNOTVALIDX(id);
216 stats->pkt_notvalid_cnt = mcs_reg_read(mcs, reg);
217
218 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCUNCHECKEDOROKX(id);
219 stats->pkt_unchecked_cnt = mcs_reg_read(mcs, reg);
220
221 if (mcs->hw->mcs_blks > 1) {
222 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCDELAYEDX(id);
223 stats->pkt_delay_cnt = mcs_reg_read(mcs, reg);
224
225 reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCOKX(id);
226 stats->pkt_ok_cnt = mcs_reg_read(mcs, reg);
227 }
228 if (mcs->hw->mcs_blks == 1) {
229 reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSCDECRYPTEDX(id);
230 stats->octet_decrypt_cnt = mcs_reg_read(mcs, reg);
231
232 reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSCVALIDATEX(id);
233 stats->octet_validate_cnt = mcs_reg_read(mcs, reg);
234 }
235 } else {
236 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSCENCRYPTEDX(id);
237 stats->pkt_encrypt_cnt = mcs_reg_read(mcs, reg);
238
239 reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSCPROTECTEDX(id);
240 stats->pkt_protected_cnt = mcs_reg_read(mcs, reg);
241
242 if (mcs->hw->mcs_blks == 1) {
243 reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSCENCRYPTEDX(id);
244 stats->octet_encrypt_cnt = mcs_reg_read(mcs, reg);
245
246 reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSCPROTECTEDX(id);
247 stats->octet_protected_cnt = mcs_reg_read(mcs, reg);
248 }
249 }
250 }
251
mcs_clear_stats(struct mcs * mcs,u8 type,u8 id,int dir)252 void mcs_clear_stats(struct mcs *mcs, u8 type, u8 id, int dir)
253 {
254 struct mcs_flowid_stats flowid_st;
255 struct mcs_port_stats port_st;
256 struct mcs_secy_stats secy_st;
257 struct mcs_sc_stats sc_st;
258 struct mcs_sa_stats sa_st;
259 u64 reg;
260
261 if (dir == MCS_RX)
262 reg = MCSX_CSE_RX_SLAVE_CTRL;
263 else
264 reg = MCSX_CSE_TX_SLAVE_CTRL;
265
266 mcs_reg_write(mcs, reg, BIT_ULL(0));
267
268 switch (type) {
269 case MCS_FLOWID_STATS:
270 mcs_get_flowid_stats(mcs, &flowid_st, id, dir);
271 break;
272 case MCS_SECY_STATS:
273 if (dir == MCS_RX)
274 mcs_get_rx_secy_stats(mcs, &secy_st, id);
275 else
276 mcs_get_tx_secy_stats(mcs, &secy_st, id);
277 break;
278 case MCS_SC_STATS:
279 mcs_get_sc_stats(mcs, &sc_st, id, dir);
280 break;
281 case MCS_SA_STATS:
282 mcs_get_sa_stats(mcs, &sa_st, id, dir);
283 break;
284 case MCS_PORT_STATS:
285 mcs_get_port_stats(mcs, &port_st, id, dir);
286 break;
287 }
288
289 mcs_reg_write(mcs, reg, 0x0);
290 }
291
mcs_clear_all_stats(struct mcs * mcs,u16 pcifunc,int dir)292 int mcs_clear_all_stats(struct mcs *mcs, u16 pcifunc, int dir)
293 {
294 struct mcs_rsrc_map *map;
295 int id;
296
297 if (dir == MCS_RX)
298 map = &mcs->rx;
299 else
300 map = &mcs->tx;
301
302 /* Clear FLOWID stats */
303 for (id = 0; id < map->flow_ids.max; id++) {
304 if (map->flowid2pf_map[id] != pcifunc)
305 continue;
306 mcs_clear_stats(mcs, MCS_FLOWID_STATS, id, dir);
307 }
308
309 /* Clear SECY stats */
310 for (id = 0; id < map->secy.max; id++) {
311 if (map->secy2pf_map[id] != pcifunc)
312 continue;
313 mcs_clear_stats(mcs, MCS_SECY_STATS, id, dir);
314 }
315
316 /* Clear SC stats */
317 for (id = 0; id < map->secy.max; id++) {
318 if (map->sc2pf_map[id] != pcifunc)
319 continue;
320 mcs_clear_stats(mcs, MCS_SC_STATS, id, dir);
321 }
322
323 /* Clear SA stats */
324 for (id = 0; id < map->sa.max; id++) {
325 if (map->sa2pf_map[id] != pcifunc)
326 continue;
327 mcs_clear_stats(mcs, MCS_SA_STATS, id, dir);
328 }
329 return 0;
330 }
331
mcs_pn_table_write(struct mcs * mcs,u8 pn_id,u64 next_pn,u8 dir)332 void mcs_pn_table_write(struct mcs *mcs, u8 pn_id, u64 next_pn, u8 dir)
333 {
334 u64 reg;
335
336 if (dir == MCS_RX)
337 reg = MCSX_CPM_RX_SLAVE_SA_PN_TABLE_MEMX(pn_id);
338 else
339 reg = MCSX_CPM_TX_SLAVE_SA_PN_TABLE_MEMX(pn_id);
340 mcs_reg_write(mcs, reg, next_pn);
341 }
342
cn10kb_mcs_tx_sa_mem_map_write(struct mcs * mcs,struct mcs_tx_sc_sa_map * map)343 void cn10kb_mcs_tx_sa_mem_map_write(struct mcs *mcs, struct mcs_tx_sc_sa_map *map)
344 {
345 u64 reg, val;
346
347 val = (map->sa_index0 & 0xFF) |
348 (map->sa_index1 & 0xFF) << 9 |
349 (map->rekey_ena & 0x1) << 18 |
350 (map->sa_index0_vld & 0x1) << 19 |
351 (map->sa_index1_vld & 0x1) << 20 |
352 (map->tx_sa_active & 0x1) << 21 |
353 map->sectag_sci << 22;
354 reg = MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(map->sc_id);
355 mcs_reg_write(mcs, reg, val);
356
357 val = map->sectag_sci >> 42;
358 reg = MCSX_CPM_TX_SLAVE_SA_MAP_MEM_1X(map->sc_id);
359 mcs_reg_write(mcs, reg, val);
360 }
361
cn10kb_mcs_rx_sa_mem_map_write(struct mcs * mcs,struct mcs_rx_sc_sa_map * map)362 void cn10kb_mcs_rx_sa_mem_map_write(struct mcs *mcs, struct mcs_rx_sc_sa_map *map)
363 {
364 u64 val, reg;
365
366 val = (map->sa_index & 0xFF) | map->sa_in_use << 9;
367
368 reg = MCSX_CPM_RX_SLAVE_SA_MAP_MEMX((4 * map->sc_id) + map->an);
369 mcs_reg_write(mcs, reg, val);
370 }
371
mcs_sa_plcy_write(struct mcs * mcs,u64 * plcy,int sa_id,int dir)372 void mcs_sa_plcy_write(struct mcs *mcs, u64 *plcy, int sa_id, int dir)
373 {
374 int reg_id;
375 u64 reg;
376
377 if (dir == MCS_RX) {
378 for (reg_id = 0; reg_id < 8; reg_id++) {
379 reg = MCSX_CPM_RX_SLAVE_SA_PLCY_MEMX(reg_id, sa_id);
380 mcs_reg_write(mcs, reg, plcy[reg_id]);
381 }
382 } else {
383 for (reg_id = 0; reg_id < 9; reg_id++) {
384 reg = MCSX_CPM_TX_SLAVE_SA_PLCY_MEMX(reg_id, sa_id);
385 mcs_reg_write(mcs, reg, plcy[reg_id]);
386 }
387 }
388 }
389
mcs_ena_dis_sc_cam_entry(struct mcs * mcs,int sc_id,int ena)390 void mcs_ena_dis_sc_cam_entry(struct mcs *mcs, int sc_id, int ena)
391 {
392 u64 reg, val;
393
394 reg = MCSX_CPM_RX_SLAVE_SC_CAM_ENA(0);
395 if (sc_id > 63)
396 reg = MCSX_CPM_RX_SLAVE_SC_CAM_ENA(1);
397
398 if (ena)
399 val = mcs_reg_read(mcs, reg) | BIT_ULL(sc_id);
400 else
401 val = mcs_reg_read(mcs, reg) & ~BIT_ULL(sc_id);
402
403 mcs_reg_write(mcs, reg, val);
404 }
405
mcs_rx_sc_cam_write(struct mcs * mcs,u64 sci,u64 secy,int sc_id)406 void mcs_rx_sc_cam_write(struct mcs *mcs, u64 sci, u64 secy, int sc_id)
407 {
408 mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SC_CAMX(0, sc_id), sci);
409 mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SC_CAMX(1, sc_id), secy);
410 /* Enable SC CAM */
411 mcs_ena_dis_sc_cam_entry(mcs, sc_id, true);
412 }
413
mcs_secy_plcy_write(struct mcs * mcs,u64 plcy,int secy_id,int dir)414 void mcs_secy_plcy_write(struct mcs *mcs, u64 plcy, int secy_id, int dir)
415 {
416 u64 reg;
417
418 if (dir == MCS_RX)
419 reg = MCSX_CPM_RX_SLAVE_SECY_PLCY_MEM_0X(secy_id);
420 else
421 reg = MCSX_CPM_TX_SLAVE_SECY_PLCY_MEMX(secy_id);
422
423 mcs_reg_write(mcs, reg, plcy);
424
425 if (mcs->hw->mcs_blks == 1 && dir == MCS_RX)
426 mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SECY_PLCY_MEM_1X(secy_id), 0x0ull);
427 }
428
cn10kb_mcs_flowid_secy_map(struct mcs * mcs,struct secy_mem_map * map,int dir)429 void cn10kb_mcs_flowid_secy_map(struct mcs *mcs, struct secy_mem_map *map, int dir)
430 {
431 u64 reg, val;
432
433 val = (map->secy & 0x7F) | (map->ctrl_pkt & 0x1) << 8;
434 if (dir == MCS_RX) {
435 reg = MCSX_CPM_RX_SLAVE_SECY_MAP_MEMX(map->flow_id);
436 } else {
437 val |= (map->sc & 0x7F) << 9;
438 reg = MCSX_CPM_TX_SLAVE_SECY_MAP_MEM_0X(map->flow_id);
439 }
440
441 mcs_reg_write(mcs, reg, val);
442 }
443
mcs_ena_dis_flowid_entry(struct mcs * mcs,int flow_id,int dir,int ena)444 void mcs_ena_dis_flowid_entry(struct mcs *mcs, int flow_id, int dir, int ena)
445 {
446 u64 reg, val;
447
448 if (dir == MCS_RX) {
449 reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_ENA_0;
450 if (flow_id > 63)
451 reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_ENA_1;
452 } else {
453 reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_ENA_0;
454 if (flow_id > 63)
455 reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_ENA_1;
456 }
457
458 /* Enable/Disable the tcam entry */
459 if (ena)
460 val = mcs_reg_read(mcs, reg) | BIT_ULL(flow_id);
461 else
462 val = mcs_reg_read(mcs, reg) & ~BIT_ULL(flow_id);
463
464 mcs_reg_write(mcs, reg, val);
465 }
466
mcs_flowid_entry_write(struct mcs * mcs,u64 * data,u64 * mask,int flow_id,int dir)467 void mcs_flowid_entry_write(struct mcs *mcs, u64 *data, u64 *mask, int flow_id, int dir)
468 {
469 int reg_id;
470 u64 reg;
471
472 if (dir == MCS_RX) {
473 for (reg_id = 0; reg_id < 4; reg_id++) {
474 reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_DATAX(reg_id, flow_id);
475 mcs_reg_write(mcs, reg, data[reg_id]);
476 }
477 for (reg_id = 0; reg_id < 4; reg_id++) {
478 reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
479 mcs_reg_write(mcs, reg, mask[reg_id]);
480 }
481 } else {
482 for (reg_id = 0; reg_id < 4; reg_id++) {
483 reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_DATAX(reg_id, flow_id);
484 mcs_reg_write(mcs, reg, data[reg_id]);
485 }
486 for (reg_id = 0; reg_id < 4; reg_id++) {
487 reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
488 mcs_reg_write(mcs, reg, mask[reg_id]);
489 }
490 }
491 }
492
mcs_install_flowid_bypass_entry(struct mcs * mcs)493 int mcs_install_flowid_bypass_entry(struct mcs *mcs)
494 {
495 int flow_id, secy_id, reg_id;
496 struct secy_mem_map map;
497 u64 reg, plcy = 0;
498
499 /* Flow entry */
500 flow_id = mcs->hw->tcam_entries - MCS_RSRC_RSVD_CNT;
501 __set_bit(flow_id, mcs->rx.flow_ids.bmap);
502 __set_bit(flow_id, mcs->tx.flow_ids.bmap);
503
504 for (reg_id = 0; reg_id < 4; reg_id++) {
505 reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
506 mcs_reg_write(mcs, reg, GENMASK_ULL(63, 0));
507 }
508 for (reg_id = 0; reg_id < 4; reg_id++) {
509 reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
510 mcs_reg_write(mcs, reg, GENMASK_ULL(63, 0));
511 }
512 /* secy */
513 secy_id = mcs->hw->secy_entries - MCS_RSRC_RSVD_CNT;
514 __set_bit(secy_id, mcs->rx.secy.bmap);
515 __set_bit(secy_id, mcs->tx.secy.bmap);
516
517 /* Set validate frames to NULL and enable control port */
518 plcy = 0x7ull;
519 if (mcs->hw->mcs_blks > 1)
520 plcy = BIT_ULL(0) | 0x3ull << 4;
521 mcs_secy_plcy_write(mcs, plcy, secy_id, MCS_RX);
522
523 /* Enable control port and set mtu to max */
524 plcy = BIT_ULL(0) | GENMASK_ULL(43, 28);
525 if (mcs->hw->mcs_blks > 1)
526 plcy = BIT_ULL(0) | GENMASK_ULL(63, 48);
527 mcs_secy_plcy_write(mcs, plcy, secy_id, MCS_TX);
528
529 /* Map flowid to secy */
530 map.secy = secy_id;
531 map.ctrl_pkt = 0;
532 map.flow_id = flow_id;
533 mcs->mcs_ops->mcs_flowid_secy_map(mcs, &map, MCS_RX);
534 map.sc = secy_id;
535 mcs->mcs_ops->mcs_flowid_secy_map(mcs, &map, MCS_TX);
536
537 /* Enable Flowid entry */
538 mcs_ena_dis_flowid_entry(mcs, flow_id, MCS_RX, true);
539 mcs_ena_dis_flowid_entry(mcs, flow_id, MCS_TX, true);
540
541 return 0;
542 }
543
mcs_clear_secy_plcy(struct mcs * mcs,int secy_id,int dir)544 void mcs_clear_secy_plcy(struct mcs *mcs, int secy_id, int dir)
545 {
546 struct mcs_rsrc_map *map;
547 int flow_id;
548
549 if (dir == MCS_RX)
550 map = &mcs->rx;
551 else
552 map = &mcs->tx;
553
554 /* Clear secy memory to zero */
555 mcs_secy_plcy_write(mcs, 0, secy_id, dir);
556
557 /* Disable the tcam entry using this secy */
558 for (flow_id = 0; flow_id < map->flow_ids.max; flow_id++) {
559 if (map->flowid2secy_map[flow_id] != secy_id)
560 continue;
561 mcs_ena_dis_flowid_entry(mcs, flow_id, dir, false);
562 }
563 }
564
mcs_alloc_ctrlpktrule(struct rsrc_bmap * rsrc,u16 * pf_map,u16 offset,u16 pcifunc)565 int mcs_alloc_ctrlpktrule(struct rsrc_bmap *rsrc, u16 *pf_map, u16 offset, u16 pcifunc)
566 {
567 int rsrc_id;
568
569 if (!rsrc->bmap)
570 return -EINVAL;
571
572 rsrc_id = bitmap_find_next_zero_area(rsrc->bmap, rsrc->max, offset, 1, 0);
573 if (rsrc_id >= rsrc->max)
574 return -ENOSPC;
575
576 bitmap_set(rsrc->bmap, rsrc_id, 1);
577 pf_map[rsrc_id] = pcifunc;
578
579 return rsrc_id;
580 }
581
mcs_free_ctrlpktrule(struct mcs * mcs,struct mcs_free_ctrl_pkt_rule_req * req)582 int mcs_free_ctrlpktrule(struct mcs *mcs, struct mcs_free_ctrl_pkt_rule_req *req)
583 {
584 u16 pcifunc = req->hdr.pcifunc;
585 struct mcs_rsrc_map *map;
586 u64 dis, reg;
587 int id, rc;
588
589 reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ENABLE : MCSX_PEX_TX_SLAVE_RULE_ENABLE;
590 map = (req->dir == MCS_RX) ? &mcs->rx : &mcs->tx;
591
592 if (req->all) {
593 for (id = 0; id < map->ctrlpktrule.max; id++) {
594 if (map->ctrlpktrule2pf_map[id] != pcifunc)
595 continue;
596 mcs_free_rsrc(&map->ctrlpktrule, map->ctrlpktrule2pf_map, id, pcifunc);
597 dis = mcs_reg_read(mcs, reg);
598 dis &= ~BIT_ULL(id);
599 mcs_reg_write(mcs, reg, dis);
600 }
601 return 0;
602 }
603
604 rc = mcs_free_rsrc(&map->ctrlpktrule, map->ctrlpktrule2pf_map, req->rule_idx, pcifunc);
605 dis = mcs_reg_read(mcs, reg);
606 dis &= ~BIT_ULL(req->rule_idx);
607 mcs_reg_write(mcs, reg, dis);
608
609 return rc;
610 }
611
mcs_ctrlpktrule_write(struct mcs * mcs,struct mcs_ctrl_pkt_rule_write_req * req)612 int mcs_ctrlpktrule_write(struct mcs *mcs, struct mcs_ctrl_pkt_rule_write_req *req)
613 {
614 u64 reg, enb;
615 u64 idx;
616
617 switch (req->rule_type) {
618 case MCS_CTRL_PKT_RULE_TYPE_ETH:
619 req->data0 &= GENMASK(15, 0);
620 if (req->data0 != ETH_P_PAE)
621 return -EINVAL;
622
623 idx = req->rule_idx - MCS_CTRLPKT_ETYPE_RULE_OFFSET;
624 reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ETYPE_CFGX(idx) :
625 MCSX_PEX_TX_SLAVE_RULE_ETYPE_CFGX(idx);
626
627 mcs_reg_write(mcs, reg, req->data0);
628 break;
629 case MCS_CTRL_PKT_RULE_TYPE_DA:
630 if (!(req->data0 & BIT_ULL(40)))
631 return -EINVAL;
632
633 idx = req->rule_idx - MCS_CTRLPKT_DA_RULE_OFFSET;
634 reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_DAX(idx) :
635 MCSX_PEX_TX_SLAVE_RULE_DAX(idx);
636
637 mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
638 break;
639 case MCS_CTRL_PKT_RULE_TYPE_RANGE:
640 if (!(req->data0 & BIT_ULL(40)) || !(req->data1 & BIT_ULL(40)))
641 return -EINVAL;
642
643 idx = req->rule_idx - MCS_CTRLPKT_DA_RANGE_RULE_OFFSET;
644 if (req->dir == MCS_RX) {
645 reg = MCSX_PEX_RX_SLAVE_RULE_DA_RANGE_MINX(idx);
646 mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
647 reg = MCSX_PEX_RX_SLAVE_RULE_DA_RANGE_MAXX(idx);
648 mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
649 } else {
650 reg = MCSX_PEX_TX_SLAVE_RULE_DA_RANGE_MINX(idx);
651 mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
652 reg = MCSX_PEX_TX_SLAVE_RULE_DA_RANGE_MAXX(idx);
653 mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
654 }
655 break;
656 case MCS_CTRL_PKT_RULE_TYPE_COMBO:
657 req->data2 &= GENMASK(15, 0);
658 if (req->data2 != ETH_P_PAE || !(req->data0 & BIT_ULL(40)) ||
659 !(req->data1 & BIT_ULL(40)))
660 return -EINVAL;
661
662 idx = req->rule_idx - MCS_CTRLPKT_COMBO_RULE_OFFSET;
663 if (req->dir == MCS_RX) {
664 reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_MINX(idx);
665 mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
666 reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_MAXX(idx);
667 mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
668 reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_ETX(idx);
669 mcs_reg_write(mcs, reg, req->data2);
670 } else {
671 reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_MINX(idx);
672 mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
673 reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_MAXX(idx);
674 mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
675 reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_ETX(idx);
676 mcs_reg_write(mcs, reg, req->data2);
677 }
678 break;
679 case MCS_CTRL_PKT_RULE_TYPE_MAC:
680 if (!(req->data0 & BIT_ULL(40)))
681 return -EINVAL;
682
683 idx = req->rule_idx - MCS_CTRLPKT_MAC_EN_RULE_OFFSET;
684 reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_MAC :
685 MCSX_PEX_TX_SLAVE_RULE_MAC;
686
687 mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
688 break;
689 }
690
691 reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ENABLE : MCSX_PEX_TX_SLAVE_RULE_ENABLE;
692
693 enb = mcs_reg_read(mcs, reg);
694 enb |= BIT_ULL(req->rule_idx);
695 mcs_reg_write(mcs, reg, enb);
696
697 return 0;
698 }
699
mcs_free_rsrc(struct rsrc_bmap * rsrc,u16 * pf_map,int rsrc_id,u16 pcifunc)700 int mcs_free_rsrc(struct rsrc_bmap *rsrc, u16 *pf_map, int rsrc_id, u16 pcifunc)
701 {
702 /* Check if the rsrc_id is mapped to PF/VF */
703 if (pf_map[rsrc_id] != pcifunc)
704 return -EINVAL;
705
706 rvu_free_rsrc(rsrc, rsrc_id);
707 pf_map[rsrc_id] = 0;
708 return 0;
709 }
710
711 /* Free all the cam resources mapped to pf */
mcs_free_all_rsrc(struct mcs * mcs,int dir,u16 pcifunc)712 int mcs_free_all_rsrc(struct mcs *mcs, int dir, u16 pcifunc)
713 {
714 struct mcs_rsrc_map *map;
715 int id;
716
717 if (dir == MCS_RX)
718 map = &mcs->rx;
719 else
720 map = &mcs->tx;
721
722 /* free tcam entries */
723 for (id = 0; id < map->flow_ids.max; id++) {
724 if (map->flowid2pf_map[id] != pcifunc)
725 continue;
726 mcs_free_rsrc(&map->flow_ids, map->flowid2pf_map,
727 id, pcifunc);
728 mcs_ena_dis_flowid_entry(mcs, id, dir, false);
729 }
730
731 /* free secy entries */
732 for (id = 0; id < map->secy.max; id++) {
733 if (map->secy2pf_map[id] != pcifunc)
734 continue;
735 mcs_free_rsrc(&map->secy, map->secy2pf_map,
736 id, pcifunc);
737 mcs_clear_secy_plcy(mcs, id, dir);
738 }
739
740 /* free sc entries */
741 for (id = 0; id < map->secy.max; id++) {
742 if (map->sc2pf_map[id] != pcifunc)
743 continue;
744 mcs_free_rsrc(&map->sc, map->sc2pf_map, id, pcifunc);
745
746 /* Disable SC CAM only on RX side */
747 if (dir == MCS_RX)
748 mcs_ena_dis_sc_cam_entry(mcs, id, false);
749 }
750
751 /* free sa entries */
752 for (id = 0; id < map->sa.max; id++) {
753 if (map->sa2pf_map[id] != pcifunc)
754 continue;
755 mcs_free_rsrc(&map->sa, map->sa2pf_map, id, pcifunc);
756 }
757 return 0;
758 }
759
mcs_alloc_rsrc(struct rsrc_bmap * rsrc,u16 * pf_map,u16 pcifunc)760 int mcs_alloc_rsrc(struct rsrc_bmap *rsrc, u16 *pf_map, u16 pcifunc)
761 {
762 int rsrc_id;
763
764 rsrc_id = rvu_alloc_rsrc(rsrc);
765 if (rsrc_id < 0)
766 return -ENOMEM;
767 pf_map[rsrc_id] = pcifunc;
768 return rsrc_id;
769 }
770
mcs_alloc_all_rsrc(struct mcs * mcs,u8 * flow_id,u8 * secy_id,u8 * sc_id,u8 * sa1_id,u8 * sa2_id,u16 pcifunc,int dir)771 int mcs_alloc_all_rsrc(struct mcs *mcs, u8 *flow_id, u8 *secy_id,
772 u8 *sc_id, u8 *sa1_id, u8 *sa2_id, u16 pcifunc, int dir)
773 {
774 struct mcs_rsrc_map *map;
775 int id;
776
777 if (dir == MCS_RX)
778 map = &mcs->rx;
779 else
780 map = &mcs->tx;
781
782 id = mcs_alloc_rsrc(&map->flow_ids, map->flowid2pf_map, pcifunc);
783 if (id < 0)
784 return -ENOMEM;
785 *flow_id = id;
786
787 id = mcs_alloc_rsrc(&map->secy, map->secy2pf_map, pcifunc);
788 if (id < 0)
789 return -ENOMEM;
790 *secy_id = id;
791
792 id = mcs_alloc_rsrc(&map->sc, map->sc2pf_map, pcifunc);
793 if (id < 0)
794 return -ENOMEM;
795 *sc_id = id;
796
797 id = mcs_alloc_rsrc(&map->sa, map->sa2pf_map, pcifunc);
798 if (id < 0)
799 return -ENOMEM;
800 *sa1_id = id;
801
802 id = mcs_alloc_rsrc(&map->sa, map->sa2pf_map, pcifunc);
803 if (id < 0)
804 return -ENOMEM;
805 *sa2_id = id;
806
807 return 0;
808 }
809
cn10kb_mcs_tx_pn_wrapped_handler(struct mcs * mcs)810 static void cn10kb_mcs_tx_pn_wrapped_handler(struct mcs *mcs)
811 {
812 struct mcs_intr_event event = { 0 };
813 struct rsrc_bmap *sc_bmap;
814 u64 val;
815 int sc;
816
817 sc_bmap = &mcs->tx.sc;
818
819 event.mcs_id = mcs->mcs_id;
820 event.intr_mask = MCS_CPM_TX_PACKET_XPN_EQ0_INT;
821
822 for_each_set_bit(sc, sc_bmap->bmap, mcs->hw->sc_entries) {
823 val = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(sc));
824
825 if (mcs->tx_sa_active[sc])
826 /* SA_index1 was used and got expired */
827 event.sa_id = (val >> 9) & 0xFF;
828 else
829 /* SA_index0 was used and got expired */
830 event.sa_id = val & 0xFF;
831
832 event.pcifunc = mcs->tx.sa2pf_map[event.sa_id];
833 mcs_add_intr_wq_entry(mcs, &event);
834 }
835 }
836
cn10kb_mcs_tx_pn_thresh_reached_handler(struct mcs * mcs)837 static void cn10kb_mcs_tx_pn_thresh_reached_handler(struct mcs *mcs)
838 {
839 struct mcs_intr_event event = { 0 };
840 struct rsrc_bmap *sc_bmap;
841 u64 val, status;
842 int sc;
843
844 sc_bmap = &mcs->tx.sc;
845
846 event.mcs_id = mcs->mcs_id;
847 event.intr_mask = MCS_CPM_TX_PN_THRESH_REACHED_INT;
848
849 /* TX SA interrupt is raised only if autorekey is enabled.
850 * MCS_CPM_TX_SLAVE_SA_MAP_MEM_0X[sc].tx_sa_active bit gets toggled if
851 * one of two SAs mapped to SC gets expired. If tx_sa_active=0 implies
852 * SA in SA_index1 got expired else SA in SA_index0 got expired.
853 */
854 for_each_set_bit(sc, sc_bmap->bmap, mcs->hw->sc_entries) {
855 val = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(sc));
856 /* Auto rekey is enable */
857 if (!((val >> 18) & 0x1))
858 continue;
859
860 status = (val >> 21) & 0x1;
861
862 /* Check if tx_sa_active status had changed */
863 if (status == mcs->tx_sa_active[sc])
864 continue;
865 /* SA_index0 is expired */
866 if (status)
867 event.sa_id = val & 0xFF;
868 else
869 event.sa_id = (val >> 9) & 0xFF;
870
871 event.pcifunc = mcs->tx.sa2pf_map[event.sa_id];
872 mcs_add_intr_wq_entry(mcs, &event);
873 }
874 }
875
mcs_rx_pn_thresh_reached_handler(struct mcs * mcs)876 static void mcs_rx_pn_thresh_reached_handler(struct mcs *mcs)
877 {
878 struct mcs_intr_event event = { 0 };
879 int sa, reg;
880 u64 intr;
881
882 /* Check expired SAs */
883 for (reg = 0; reg < (mcs->hw->sa_entries / 64); reg++) {
884 /* Bit high in *PN_THRESH_REACHEDX implies
885 * corresponding SAs are expired.
886 */
887 intr = mcs_reg_read(mcs, MCSX_CPM_RX_SLAVE_PN_THRESH_REACHEDX(reg));
888 for (sa = 0; sa < 64; sa++) {
889 if (!(intr & BIT_ULL(sa)))
890 continue;
891
892 event.mcs_id = mcs->mcs_id;
893 event.intr_mask = MCS_CPM_RX_PN_THRESH_REACHED_INT;
894 event.sa_id = sa + (reg * 64);
895 event.pcifunc = mcs->rx.sa2pf_map[event.sa_id];
896 mcs_add_intr_wq_entry(mcs, &event);
897 }
898 }
899 }
900
mcs_rx_misc_intr_handler(struct mcs * mcs,u64 intr)901 static void mcs_rx_misc_intr_handler(struct mcs *mcs, u64 intr)
902 {
903 struct mcs_intr_event event = { 0 };
904
905 event.mcs_id = mcs->mcs_id;
906 event.pcifunc = mcs->pf_map[0];
907
908 if (intr & MCS_CPM_RX_INT_SECTAG_V_EQ1)
909 event.intr_mask = MCS_CPM_RX_SECTAG_V_EQ1_INT;
910 if (intr & MCS_CPM_RX_INT_SECTAG_E_EQ0_C_EQ1)
911 event.intr_mask |= MCS_CPM_RX_SECTAG_E_EQ0_C_EQ1_INT;
912 if (intr & MCS_CPM_RX_INT_SL_GTE48)
913 event.intr_mask |= MCS_CPM_RX_SECTAG_SL_GTE48_INT;
914 if (intr & MCS_CPM_RX_INT_ES_EQ1_SC_EQ1)
915 event.intr_mask |= MCS_CPM_RX_SECTAG_ES_EQ1_SC_EQ1_INT;
916 if (intr & MCS_CPM_RX_INT_SC_EQ1_SCB_EQ1)
917 event.intr_mask |= MCS_CPM_RX_SECTAG_SC_EQ1_SCB_EQ1_INT;
918 if (intr & MCS_CPM_RX_INT_PACKET_XPN_EQ0)
919 event.intr_mask |= MCS_CPM_RX_PACKET_XPN_EQ0_INT;
920
921 mcs_add_intr_wq_entry(mcs, &event);
922 }
923
mcs_tx_misc_intr_handler(struct mcs * mcs,u64 intr)924 static void mcs_tx_misc_intr_handler(struct mcs *mcs, u64 intr)
925 {
926 struct mcs_intr_event event = { 0 };
927
928 if (!(intr & MCS_CPM_TX_INT_SA_NOT_VALID))
929 return;
930
931 event.mcs_id = mcs->mcs_id;
932 event.pcifunc = mcs->pf_map[0];
933
934 event.intr_mask = MCS_CPM_TX_SA_NOT_VALID_INT;
935
936 mcs_add_intr_wq_entry(mcs, &event);
937 }
938
cn10kb_mcs_bbe_intr_handler(struct mcs * mcs,u64 intr,enum mcs_direction dir)939 void cn10kb_mcs_bbe_intr_handler(struct mcs *mcs, u64 intr,
940 enum mcs_direction dir)
941 {
942 u64 val, reg;
943 int lmac;
944
945 if (!(intr & 0x6ULL))
946 return;
947
948 if (intr & BIT_ULL(1))
949 reg = (dir == MCS_RX) ? MCSX_BBE_RX_SLAVE_DFIFO_OVERFLOW_0 :
950 MCSX_BBE_TX_SLAVE_DFIFO_OVERFLOW_0;
951 else
952 reg = (dir == MCS_RX) ? MCSX_BBE_RX_SLAVE_PLFIFO_OVERFLOW_0 :
953 MCSX_BBE_TX_SLAVE_PLFIFO_OVERFLOW_0;
954 val = mcs_reg_read(mcs, reg);
955
956 /* policy/data over flow occurred */
957 for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
958 if (!(val & BIT_ULL(lmac)))
959 continue;
960 dev_warn(mcs->dev, "BEE:Policy or data overflow occurred on lmac:%d\n", lmac);
961 }
962 }
963
cn10kb_mcs_pab_intr_handler(struct mcs * mcs,u64 intr,enum mcs_direction dir)964 void cn10kb_mcs_pab_intr_handler(struct mcs *mcs, u64 intr,
965 enum mcs_direction dir)
966 {
967 int lmac;
968
969 if (!(intr & 0xFFFFFULL))
970 return;
971
972 for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
973 if (intr & BIT_ULL(lmac))
974 dev_warn(mcs->dev, "PAB: overflow occurred on lmac:%d\n", lmac);
975 }
976 }
977
mcs_ip_intr_handler(int irq,void * mcs_irq)978 static irqreturn_t mcs_ip_intr_handler(int irq, void *mcs_irq)
979 {
980 struct mcs *mcs = (struct mcs *)mcs_irq;
981 u64 intr, cpm_intr, bbe_intr, pab_intr;
982
983 /* Disable the interrupt */
984 mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1C, BIT_ULL(0));
985
986 /* Check which block has interrupt*/
987 intr = mcs_reg_read(mcs, MCSX_TOP_SLAVE_INT_SUM);
988
989 /* CPM RX */
990 if (intr & MCS_CPM_RX_INT_ENA) {
991 /* Check for PN thresh interrupt bit */
992 cpm_intr = mcs_reg_read(mcs, MCSX_CPM_RX_SLAVE_RX_INT);
993
994 if (cpm_intr & MCS_CPM_RX_INT_PN_THRESH_REACHED)
995 mcs_rx_pn_thresh_reached_handler(mcs);
996
997 if (cpm_intr & MCS_CPM_RX_INT_ALL)
998 mcs_rx_misc_intr_handler(mcs, cpm_intr);
999
1000 /* Clear the interrupt */
1001 mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_RX_INT, cpm_intr);
1002 }
1003
1004 /* CPM TX */
1005 if (intr & MCS_CPM_TX_INT_ENA) {
1006 cpm_intr = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_TX_INT);
1007
1008 if (cpm_intr & MCS_CPM_TX_INT_PN_THRESH_REACHED) {
1009 if (mcs->hw->mcs_blks > 1)
1010 cnf10kb_mcs_tx_pn_thresh_reached_handler(mcs);
1011 else
1012 cn10kb_mcs_tx_pn_thresh_reached_handler(mcs);
1013 }
1014
1015 if (cpm_intr & MCS_CPM_TX_INT_SA_NOT_VALID)
1016 mcs_tx_misc_intr_handler(mcs, cpm_intr);
1017
1018 if (cpm_intr & MCS_CPM_TX_INT_PACKET_XPN_EQ0) {
1019 if (mcs->hw->mcs_blks > 1)
1020 cnf10kb_mcs_tx_pn_wrapped_handler(mcs);
1021 else
1022 cn10kb_mcs_tx_pn_wrapped_handler(mcs);
1023 }
1024 /* Clear the interrupt */
1025 mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_TX_INT, cpm_intr);
1026 }
1027
1028 /* BBE RX */
1029 if (intr & MCS_BBE_RX_INT_ENA) {
1030 bbe_intr = mcs_reg_read(mcs, MCSX_BBE_RX_SLAVE_BBE_INT);
1031 mcs->mcs_ops->mcs_bbe_intr_handler(mcs, bbe_intr, MCS_RX);
1032
1033 /* Clear the interrupt */
1034 mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT_INTR_RW, 0);
1035 mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT, bbe_intr);
1036 }
1037
1038 /* BBE TX */
1039 if (intr & MCS_BBE_TX_INT_ENA) {
1040 bbe_intr = mcs_reg_read(mcs, MCSX_BBE_TX_SLAVE_BBE_INT);
1041 mcs->mcs_ops->mcs_bbe_intr_handler(mcs, bbe_intr, MCS_TX);
1042
1043 /* Clear the interrupt */
1044 mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT_INTR_RW, 0);
1045 mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT, bbe_intr);
1046 }
1047
1048 /* PAB RX */
1049 if (intr & MCS_PAB_RX_INT_ENA) {
1050 pab_intr = mcs_reg_read(mcs, MCSX_PAB_RX_SLAVE_PAB_INT);
1051 mcs->mcs_ops->mcs_pab_intr_handler(mcs, pab_intr, MCS_RX);
1052
1053 /* Clear the interrupt */
1054 mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT_INTR_RW, 0);
1055 mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT, pab_intr);
1056 }
1057
1058 /* PAB TX */
1059 if (intr & MCS_PAB_TX_INT_ENA) {
1060 pab_intr = mcs_reg_read(mcs, MCSX_PAB_TX_SLAVE_PAB_INT);
1061 mcs->mcs_ops->mcs_pab_intr_handler(mcs, pab_intr, MCS_TX);
1062
1063 /* Clear the interrupt */
1064 mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT_INTR_RW, 0);
1065 mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT, pab_intr);
1066 }
1067
1068 /* Clear and enable the interrupt */
1069 mcs_reg_write(mcs, MCSX_IP_INT, BIT_ULL(0));
1070 mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1S, BIT_ULL(0));
1071
1072 return IRQ_HANDLED;
1073 }
1074
alloc_mem(struct mcs * mcs,int n)1075 static void *alloc_mem(struct mcs *mcs, int n)
1076 {
1077 return devm_kcalloc(mcs->dev, n, sizeof(u16), GFP_KERNEL);
1078 }
1079
mcs_alloc_struct_mem(struct mcs * mcs,struct mcs_rsrc_map * res)1080 static int mcs_alloc_struct_mem(struct mcs *mcs, struct mcs_rsrc_map *res)
1081 {
1082 struct hwinfo *hw = mcs->hw;
1083 int err;
1084
1085 res->flowid2pf_map = alloc_mem(mcs, hw->tcam_entries);
1086 if (!res->flowid2pf_map)
1087 return -ENOMEM;
1088
1089 res->secy2pf_map = alloc_mem(mcs, hw->secy_entries);
1090 if (!res->secy2pf_map)
1091 return -ENOMEM;
1092
1093 res->sc2pf_map = alloc_mem(mcs, hw->sc_entries);
1094 if (!res->sc2pf_map)
1095 return -ENOMEM;
1096
1097 res->sa2pf_map = alloc_mem(mcs, hw->sa_entries);
1098 if (!res->sa2pf_map)
1099 return -ENOMEM;
1100
1101 res->flowid2secy_map = alloc_mem(mcs, hw->tcam_entries);
1102 if (!res->flowid2secy_map)
1103 return -ENOMEM;
1104
1105 res->ctrlpktrule2pf_map = alloc_mem(mcs, MCS_MAX_CTRLPKT_RULES);
1106 if (!res->ctrlpktrule2pf_map)
1107 return -ENOMEM;
1108
1109 res->flow_ids.max = hw->tcam_entries - MCS_RSRC_RSVD_CNT;
1110 err = rvu_alloc_bitmap(&res->flow_ids);
1111 if (err)
1112 return err;
1113
1114 res->secy.max = hw->secy_entries - MCS_RSRC_RSVD_CNT;
1115 err = rvu_alloc_bitmap(&res->secy);
1116 if (err)
1117 return err;
1118
1119 res->sc.max = hw->sc_entries;
1120 err = rvu_alloc_bitmap(&res->sc);
1121 if (err)
1122 return err;
1123
1124 res->sa.max = hw->sa_entries;
1125 err = rvu_alloc_bitmap(&res->sa);
1126 if (err)
1127 return err;
1128
1129 res->ctrlpktrule.max = MCS_MAX_CTRLPKT_RULES;
1130 err = rvu_alloc_bitmap(&res->ctrlpktrule);
1131 if (err)
1132 return err;
1133
1134 return 0;
1135 }
1136
mcs_register_interrupts(struct mcs * mcs)1137 static int mcs_register_interrupts(struct mcs *mcs)
1138 {
1139 int ret = 0;
1140
1141 mcs->num_vec = pci_msix_vec_count(mcs->pdev);
1142
1143 ret = pci_alloc_irq_vectors(mcs->pdev, mcs->num_vec,
1144 mcs->num_vec, PCI_IRQ_MSIX);
1145 if (ret < 0) {
1146 dev_err(mcs->dev, "MCS Request for %d msix vector failed err:%d\n",
1147 mcs->num_vec, ret);
1148 return ret;
1149 }
1150
1151 ret = request_irq(pci_irq_vector(mcs->pdev, mcs->hw->ip_vec),
1152 mcs_ip_intr_handler, 0, "MCS_IP", mcs);
1153 if (ret) {
1154 dev_err(mcs->dev, "MCS IP irq registration failed\n");
1155 goto exit;
1156 }
1157
1158 /* MCS enable IP interrupts */
1159 mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1S, BIT_ULL(0));
1160
1161 /* Enable CPM Rx/Tx interrupts */
1162 mcs_reg_write(mcs, MCSX_TOP_SLAVE_INT_SUM_ENB,
1163 MCS_CPM_RX_INT_ENA | MCS_CPM_TX_INT_ENA |
1164 MCS_BBE_RX_INT_ENA | MCS_BBE_TX_INT_ENA |
1165 MCS_PAB_RX_INT_ENA | MCS_PAB_TX_INT_ENA);
1166
1167 mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_TX_INT_ENB, 0x7ULL);
1168 mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_RX_INT_ENB, 0x7FULL);
1169
1170 mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT_ENB, 0xFFULL);
1171 mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT_ENB, 0xFFULL);
1172
1173 mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT_ENB, 0xFFFFFULL);
1174 mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT_ENB, 0xFFFFFULL);
1175
1176 mcs->tx_sa_active = alloc_mem(mcs, mcs->hw->sc_entries);
1177 if (!mcs->tx_sa_active) {
1178 ret = -ENOMEM;
1179 goto free_irq;
1180 }
1181
1182 return ret;
1183
1184 free_irq:
1185 free_irq(pci_irq_vector(mcs->pdev, mcs->hw->ip_vec), mcs);
1186 exit:
1187 pci_free_irq_vectors(mcs->pdev);
1188 mcs->num_vec = 0;
1189 return ret;
1190 }
1191
mcs_get_blkcnt(void)1192 int mcs_get_blkcnt(void)
1193 {
1194 struct mcs *mcs;
1195 int idmax = -ENODEV;
1196
1197 /* Check MCS block is present in hardware */
1198 if (!pci_dev_present(mcs_id_table))
1199 return 0;
1200
1201 list_for_each_entry(mcs, &mcs_list, mcs_list)
1202 if (mcs->mcs_id > idmax)
1203 idmax = mcs->mcs_id;
1204
1205 if (idmax < 0)
1206 return 0;
1207
1208 return idmax + 1;
1209 }
1210
mcs_get_pdata(int mcs_id)1211 struct mcs *mcs_get_pdata(int mcs_id)
1212 {
1213 struct mcs *mcs_dev;
1214
1215 list_for_each_entry(mcs_dev, &mcs_list, mcs_list) {
1216 if (mcs_dev->mcs_id == mcs_id)
1217 return mcs_dev;
1218 }
1219 return NULL;
1220 }
1221
mcs_set_port_cfg(struct mcs * mcs,struct mcs_port_cfg_set_req * req)1222 void mcs_set_port_cfg(struct mcs *mcs, struct mcs_port_cfg_set_req *req)
1223 {
1224 u64 val = 0;
1225
1226 mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PORT_CFGX(req->port_id),
1227 req->port_mode & MCS_PORT_MODE_MASK);
1228
1229 req->cstm_tag_rel_mode_sel &= 0x3;
1230
1231 if (mcs->hw->mcs_blks > 1) {
1232 req->fifo_skid &= MCS_PORT_FIFO_SKID_MASK;
1233 val = (u32)req->fifo_skid << 0x10;
1234 val |= req->fifo_skid;
1235 mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(req->port_id), val);
1236 mcs_reg_write(mcs, MCSX_PEX_TX_SLAVE_CUSTOM_TAG_REL_MODE_SEL(req->port_id),
1237 req->cstm_tag_rel_mode_sel);
1238 val = mcs_reg_read(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION);
1239
1240 if (req->custom_hdr_enb)
1241 val |= BIT_ULL(req->port_id);
1242 else
1243 val &= ~BIT_ULL(req->port_id);
1244
1245 mcs_reg_write(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION, val);
1246 } else {
1247 val = mcs_reg_read(mcs, MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id));
1248 val |= (req->cstm_tag_rel_mode_sel << 2);
1249 mcs_reg_write(mcs, MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id), val);
1250 }
1251 }
1252
mcs_get_port_cfg(struct mcs * mcs,struct mcs_port_cfg_get_req * req,struct mcs_port_cfg_get_rsp * rsp)1253 void mcs_get_port_cfg(struct mcs *mcs, struct mcs_port_cfg_get_req *req,
1254 struct mcs_port_cfg_get_rsp *rsp)
1255 {
1256 u64 reg = 0;
1257
1258 rsp->port_mode = mcs_reg_read(mcs, MCSX_PAB_RX_SLAVE_PORT_CFGX(req->port_id)) &
1259 MCS_PORT_MODE_MASK;
1260
1261 if (mcs->hw->mcs_blks > 1) {
1262 reg = MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(req->port_id);
1263 rsp->fifo_skid = mcs_reg_read(mcs, reg) & MCS_PORT_FIFO_SKID_MASK;
1264 reg = MCSX_PEX_TX_SLAVE_CUSTOM_TAG_REL_MODE_SEL(req->port_id);
1265 rsp->cstm_tag_rel_mode_sel = mcs_reg_read(mcs, reg) & 0x3;
1266 if (mcs_reg_read(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION) & BIT_ULL(req->port_id))
1267 rsp->custom_hdr_enb = 1;
1268 } else {
1269 reg = MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id);
1270 rsp->cstm_tag_rel_mode_sel = mcs_reg_read(mcs, reg) >> 2;
1271 }
1272
1273 rsp->port_id = req->port_id;
1274 rsp->mcs_id = req->mcs_id;
1275 }
1276
mcs_get_custom_tag_cfg(struct mcs * mcs,struct mcs_custom_tag_cfg_get_req * req,struct mcs_custom_tag_cfg_get_rsp * rsp)1277 void mcs_get_custom_tag_cfg(struct mcs *mcs, struct mcs_custom_tag_cfg_get_req *req,
1278 struct mcs_custom_tag_cfg_get_rsp *rsp)
1279 {
1280 u64 reg = 0, val = 0;
1281 u8 idx;
1282
1283 for (idx = 0; idx < MCS_MAX_CUSTOM_TAGS; idx++) {
1284 if (mcs->hw->mcs_blks > 1)
1285 reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_CUSTOM_TAGX(idx) :
1286 MCSX_PEX_TX_SLAVE_CUSTOM_TAGX(idx);
1287 else
1288 reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_VLAN_CFGX(idx) :
1289 MCSX_PEX_TX_SLAVE_VLAN_CFGX(idx);
1290
1291 val = mcs_reg_read(mcs, reg);
1292 if (mcs->hw->mcs_blks > 1) {
1293 rsp->cstm_etype[idx] = val & GENMASK(15, 0);
1294 rsp->cstm_indx[idx] = (val >> 0x16) & 0x3;
1295 reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_ETYPE_ENABLE :
1296 MCSX_PEX_TX_SLAVE_ETYPE_ENABLE;
1297 rsp->cstm_etype_en = mcs_reg_read(mcs, reg) & 0xFF;
1298 } else {
1299 rsp->cstm_etype[idx] = (val >> 0x1) & GENMASK(15, 0);
1300 rsp->cstm_indx[idx] = (val >> 0x11) & 0x3;
1301 rsp->cstm_etype_en |= (val & 0x1) << idx;
1302 }
1303 }
1304
1305 rsp->mcs_id = req->mcs_id;
1306 rsp->dir = req->dir;
1307 }
1308
mcs_reset_port(struct mcs * mcs,u8 port_id,u8 reset)1309 void mcs_reset_port(struct mcs *mcs, u8 port_id, u8 reset)
1310 {
1311 u64 reg = MCSX_MCS_TOP_SLAVE_PORT_RESET(port_id);
1312
1313 mcs_reg_write(mcs, reg, reset & 0x1);
1314 }
1315
1316 /* Set lmac to bypass/operational mode */
mcs_set_lmac_mode(struct mcs * mcs,int lmac_id,u8 mode)1317 void mcs_set_lmac_mode(struct mcs *mcs, int lmac_id, u8 mode)
1318 {
1319 u64 reg;
1320 int id = lmac_id * 2;
1321
1322 reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG(id);
1323 mcs_reg_write(mcs, reg, (u64)mode);
1324 reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG((id + 1));
1325 mcs_reg_write(mcs, reg, (u64)mode);
1326 }
1327
mcs_pn_threshold_set(struct mcs * mcs,struct mcs_set_pn_threshold * pn)1328 void mcs_pn_threshold_set(struct mcs *mcs, struct mcs_set_pn_threshold *pn)
1329 {
1330 u64 reg;
1331
1332 if (pn->dir == MCS_RX)
1333 reg = pn->xpn ? MCSX_CPM_RX_SLAVE_XPN_THRESHOLD : MCSX_CPM_RX_SLAVE_PN_THRESHOLD;
1334 else
1335 reg = pn->xpn ? MCSX_CPM_TX_SLAVE_XPN_THRESHOLD : MCSX_CPM_TX_SLAVE_PN_THRESHOLD;
1336
1337 mcs_reg_write(mcs, reg, pn->threshold);
1338 }
1339
cn10kb_mcs_parser_cfg(struct mcs * mcs)1340 void cn10kb_mcs_parser_cfg(struct mcs *mcs)
1341 {
1342 u64 reg, val;
1343
1344 /* VLAN CTag */
1345 val = BIT_ULL(0) | (0x8100ull & 0xFFFF) << 1 | BIT_ULL(17);
1346 /* RX */
1347 reg = MCSX_PEX_RX_SLAVE_VLAN_CFGX(0);
1348 mcs_reg_write(mcs, reg, val);
1349
1350 /* TX */
1351 reg = MCSX_PEX_TX_SLAVE_VLAN_CFGX(0);
1352 mcs_reg_write(mcs, reg, val);
1353
1354 /* VLAN STag */
1355 val = BIT_ULL(0) | (0x88a8ull & 0xFFFF) << 1 | BIT_ULL(18);
1356 /* RX */
1357 reg = MCSX_PEX_RX_SLAVE_VLAN_CFGX(1);
1358 mcs_reg_write(mcs, reg, val);
1359
1360 /* TX */
1361 reg = MCSX_PEX_TX_SLAVE_VLAN_CFGX(1);
1362 mcs_reg_write(mcs, reg, val);
1363 }
1364
mcs_lmac_init(struct mcs * mcs,int lmac_id)1365 static void mcs_lmac_init(struct mcs *mcs, int lmac_id)
1366 {
1367 u64 reg;
1368
1369 /* Port mode 25GB */
1370 reg = MCSX_PAB_RX_SLAVE_PORT_CFGX(lmac_id);
1371 mcs_reg_write(mcs, reg, 0);
1372
1373 if (mcs->hw->mcs_blks > 1) {
1374 reg = MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(lmac_id);
1375 mcs_reg_write(mcs, reg, 0xe000e);
1376 return;
1377 }
1378
1379 reg = MCSX_PAB_TX_SLAVE_PORT_CFGX(lmac_id);
1380 mcs_reg_write(mcs, reg, 0);
1381 }
1382
mcs_set_lmac_channels(int mcs_id,u16 base)1383 int mcs_set_lmac_channels(int mcs_id, u16 base)
1384 {
1385 struct mcs *mcs;
1386 int lmac;
1387 u64 cfg;
1388
1389 mcs = mcs_get_pdata(mcs_id);
1390 if (!mcs)
1391 return -ENODEV;
1392 for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
1393 cfg = mcs_reg_read(mcs, MCSX_LINK_LMACX_CFG(lmac));
1394 cfg &= ~(MCSX_LINK_LMAC_BASE_MASK | MCSX_LINK_LMAC_RANGE_MASK);
1395 cfg |= FIELD_PREP(MCSX_LINK_LMAC_RANGE_MASK, ilog2(16));
1396 cfg |= FIELD_PREP(MCSX_LINK_LMAC_BASE_MASK, base);
1397 mcs_reg_write(mcs, MCSX_LINK_LMACX_CFG(lmac), cfg);
1398 base += 16;
1399 }
1400 return 0;
1401 }
1402
mcs_x2p_calibration(struct mcs * mcs)1403 static int mcs_x2p_calibration(struct mcs *mcs)
1404 {
1405 unsigned long timeout = jiffies + usecs_to_jiffies(20000);
1406 int i, err = 0;
1407 u64 val;
1408
1409 /* set X2P calibration */
1410 val = mcs_reg_read(mcs, MCSX_MIL_GLOBAL);
1411 val |= BIT_ULL(5);
1412 mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
1413
1414 /* Wait for calibration to complete */
1415 while (!(mcs_reg_read(mcs, MCSX_MIL_RX_GBL_STATUS) & BIT_ULL(0))) {
1416 if (time_before(jiffies, timeout)) {
1417 usleep_range(80, 100);
1418 continue;
1419 } else {
1420 err = -EBUSY;
1421 dev_err(mcs->dev, "MCS X2P calibration failed..ignoring\n");
1422 return err;
1423 }
1424 }
1425
1426 val = mcs_reg_read(mcs, MCSX_MIL_RX_GBL_STATUS);
1427 for (i = 0; i < mcs->hw->mcs_x2p_intf; i++) {
1428 if (val & BIT_ULL(1 + i))
1429 continue;
1430 err = -EBUSY;
1431 dev_err(mcs->dev, "MCS:%d didn't respond to X2P calibration\n", i);
1432 }
1433 /* Clear X2P calibrate */
1434 mcs_reg_write(mcs, MCSX_MIL_GLOBAL, mcs_reg_read(mcs, MCSX_MIL_GLOBAL) & ~BIT_ULL(5));
1435
1436 return err;
1437 }
1438
mcs_set_external_bypass(struct mcs * mcs,u8 bypass)1439 static void mcs_set_external_bypass(struct mcs *mcs, u8 bypass)
1440 {
1441 u64 val;
1442
1443 /* Set MCS to external bypass */
1444 val = mcs_reg_read(mcs, MCSX_MIL_GLOBAL);
1445 if (bypass)
1446 val |= BIT_ULL(6);
1447 else
1448 val &= ~BIT_ULL(6);
1449 mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
1450 }
1451
mcs_global_cfg(struct mcs * mcs)1452 static void mcs_global_cfg(struct mcs *mcs)
1453 {
1454 /* Disable external bypass */
1455 mcs_set_external_bypass(mcs, false);
1456
1457 /* Reset TX/RX stats memory */
1458 mcs_reg_write(mcs, MCSX_CSE_RX_SLAVE_STATS_CLEAR, 0x1F);
1459 mcs_reg_write(mcs, MCSX_CSE_TX_SLAVE_STATS_CLEAR, 0x1F);
1460
1461 /* Set MCS to perform standard IEEE802.1AE macsec processing */
1462 if (mcs->hw->mcs_blks == 1) {
1463 mcs_reg_write(mcs, MCSX_IP_MODE, BIT_ULL(3));
1464 return;
1465 }
1466
1467 mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_CAL_ENTRY, 0xe4);
1468 mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_CAL_LEN, 4);
1469 }
1470
cn10kb_mcs_set_hw_capabilities(struct mcs * mcs)1471 void cn10kb_mcs_set_hw_capabilities(struct mcs *mcs)
1472 {
1473 struct hwinfo *hw = mcs->hw;
1474
1475 hw->tcam_entries = 128; /* TCAM entries */
1476 hw->secy_entries = 128; /* SecY entries */
1477 hw->sc_entries = 128; /* SC CAM entries */
1478 hw->sa_entries = 256; /* SA entries */
1479 hw->lmac_cnt = 20; /* lmacs/ports per mcs block */
1480 hw->mcs_x2p_intf = 5; /* x2p clabration intf */
1481 hw->mcs_blks = 1; /* MCS blocks */
1482 hw->ip_vec = MCS_CN10KB_INT_VEC_IP; /* IP vector */
1483 }
1484
1485 static struct mcs_ops cn10kb_mcs_ops = {
1486 .mcs_set_hw_capabilities = cn10kb_mcs_set_hw_capabilities,
1487 .mcs_parser_cfg = cn10kb_mcs_parser_cfg,
1488 .mcs_tx_sa_mem_map_write = cn10kb_mcs_tx_sa_mem_map_write,
1489 .mcs_rx_sa_mem_map_write = cn10kb_mcs_rx_sa_mem_map_write,
1490 .mcs_flowid_secy_map = cn10kb_mcs_flowid_secy_map,
1491 .mcs_bbe_intr_handler = cn10kb_mcs_bbe_intr_handler,
1492 .mcs_pab_intr_handler = cn10kb_mcs_pab_intr_handler,
1493 };
1494
mcs_probe(struct pci_dev * pdev,const struct pci_device_id * id)1495 static int mcs_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1496 {
1497 struct device *dev = &pdev->dev;
1498 int lmac, err = 0;
1499 struct mcs *mcs;
1500
1501 mcs = devm_kzalloc(dev, sizeof(*mcs), GFP_KERNEL);
1502 if (!mcs)
1503 return -ENOMEM;
1504
1505 mcs->hw = devm_kzalloc(dev, sizeof(struct hwinfo), GFP_KERNEL);
1506 if (!mcs->hw)
1507 return -ENOMEM;
1508
1509 err = pci_enable_device(pdev);
1510 if (err) {
1511 dev_err(dev, "Failed to enable PCI device\n");
1512 pci_set_drvdata(pdev, NULL);
1513 return err;
1514 }
1515
1516 err = pci_request_regions(pdev, DRV_NAME);
1517 if (err) {
1518 dev_err(dev, "PCI request regions failed 0x%x\n", err);
1519 goto exit;
1520 }
1521
1522 mcs->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
1523 if (!mcs->reg_base) {
1524 dev_err(dev, "mcs: Cannot map CSR memory space, aborting\n");
1525 err = -ENOMEM;
1526 goto exit;
1527 }
1528
1529 pci_set_drvdata(pdev, mcs);
1530 mcs->pdev = pdev;
1531 mcs->dev = &pdev->dev;
1532
1533 if (pdev->subsystem_device == PCI_SUBSYS_DEVID_CN10K_B)
1534 mcs->mcs_ops = &cn10kb_mcs_ops;
1535 else
1536 mcs->mcs_ops = cnf10kb_get_mac_ops();
1537
1538 /* Set hardware capabilities */
1539 mcs->mcs_ops->mcs_set_hw_capabilities(mcs);
1540
1541 mcs_global_cfg(mcs);
1542
1543 /* Perform X2P clibration */
1544 err = mcs_x2p_calibration(mcs);
1545 if (err)
1546 goto err_x2p;
1547
1548 mcs->mcs_id = (pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM) >> 24)
1549 & MCS_ID_MASK;
1550
1551 /* Set mcs tx side resources */
1552 err = mcs_alloc_struct_mem(mcs, &mcs->tx);
1553 if (err)
1554 goto err_x2p;
1555
1556 /* Set mcs rx side resources */
1557 err = mcs_alloc_struct_mem(mcs, &mcs->rx);
1558 if (err)
1559 goto err_x2p;
1560
1561 /* per port config */
1562 for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++)
1563 mcs_lmac_init(mcs, lmac);
1564
1565 /* Parser configuration */
1566 mcs->mcs_ops->mcs_parser_cfg(mcs);
1567
1568 err = mcs_register_interrupts(mcs);
1569 if (err)
1570 goto exit;
1571
1572 list_add(&mcs->mcs_list, &mcs_list);
1573 mutex_init(&mcs->stats_lock);
1574
1575 return 0;
1576
1577 err_x2p:
1578 /* Enable external bypass */
1579 mcs_set_external_bypass(mcs, true);
1580 exit:
1581 pci_release_regions(pdev);
1582 pci_disable_device(pdev);
1583 pci_set_drvdata(pdev, NULL);
1584 return err;
1585 }
1586
mcs_remove(struct pci_dev * pdev)1587 static void mcs_remove(struct pci_dev *pdev)
1588 {
1589 struct mcs *mcs = pci_get_drvdata(pdev);
1590
1591 /* Set MCS to external bypass */
1592 mcs_set_external_bypass(mcs, true);
1593 free_irq(pci_irq_vector(pdev, mcs->hw->ip_vec), mcs);
1594 pci_free_irq_vectors(pdev);
1595 pci_release_regions(pdev);
1596 pci_disable_device(pdev);
1597 pci_set_drvdata(pdev, NULL);
1598 }
1599
1600 struct pci_driver mcs_driver = {
1601 .name = DRV_NAME,
1602 .id_table = mcs_id_table,
1603 .probe = mcs_probe,
1604 .remove = mcs_remove,
1605 };
1606
